Composed of light-absorbing, colloidal quantum dots linked to carbon-based fullerene nanoparticles, these tiny two-particle systems can convert light to electricity in a precisely controlled way.

FORBES: Quantum Dots and Fullerenes Team Up For Better Nanoscale Solar Panels

Colloidal silver is a solution of submicroscopic particles of pure silver suspended in water by an electric charge on each particle.

FORBES: What's Next?